Quiz 5 - Version 235 Quiz 5 Laude (53755) 1 This print-out...

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Unformatted text preview: Version 235 Quiz 5 Laude (53755) 1 This print-out should have 8 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 5.0 points Approximate the work for the following re- action at 300 K. CH 4 (g) + 2O 2 (g)- CO 2 (g) + 2H 2 O( ) 1. 5 kJ correct 2.- 5 kJ 3. 0 kJ 4. 2 . 5 kJ 5.- 2 . 5 kJ Explanation: At room temperature ( 300 K), the product of the RT term in W =- n gas RT is approx- imately 2 . 5 kJ. Since n gas is- 2 for this reaction, the work function is approximately 5 kJ. 002 5.0 points Using the provided bond enthalpy data, cal- culate the change in enthalpy for the following reaction: 2N 2 H 2 (g) + 3O 2 (g) 4NO(g) + 2H 2 O(g) 1. 1 , 166 kJ mol 1 2. 1 , 531 kJ mol 1 3.- 514 kJ mol 1 correct 4.- 1 , 531 kJ mol 1 5.- 1 , 166 kJ mol 1 6. 514 kJ mol 1 Explanation: H rxn = BE reactants- BE products = 2 409 kJ mol 1 + 4 388 kJ mol 1 +3 496 kJ mol 1- 4 630 kJ mol 1- 4 463 kJ mol 1 =- 514 kJ mol 1 003 5.0 points For this problem assume that the calorime- ter itself absorbs no heat.ter itself absorbs no heat....
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This note was uploaded on 06/06/2010 for the course CH 301 taught by Professor Fakhreddine/lyon during the Fall '07 term at University of Texas at Austin.

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Quiz 5 - Version 235 Quiz 5 Laude (53755) 1 This print-out...

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